Transactions of Materials and Heat Treatment

Title：Multi-directional forging process of metal iron seat for railway fastener system

Authors： Ding Jinfu Yao Tangwei Yu huihui Yu Anmei

Unit： Zhejiang Normal University Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province Zhejiang Huaguang Precision Manufacturing Co. Ltd.

KeyWords： fastener system metal iron seat multi-directional forging forging deformation force folding software Forge

ClassificationCode：TG316

year,vol(issue):pagenumber：2021,46(11):18-24

Abstract：

In order to meet the harsh environment requirements of high-speed railway sections facing bitter cold and intense heat weather, it is urgent to develop the high-strength forged backing plates in the rail fastener system. To realize the process of “Forging Instead of Casting”, a multi-directional forging process of upper die for “Closed Die Forging” and left and right inserting dies for “Opposite Punching” was proposed, and the deformation force of multi-directional forging was analyzed by establishing a physical model. Then, the filling process of metal backing plate was simulated by software Forge, and the plastic flow, deformation force etc. of metal iron seat during the forging process were simulated to analyze the folding phenomenon that might occur after the material flow was blocked. The results show that there is no folding phenomenon for metal iron seat during the multi-directional forging process. The deformation force calculated theoretically is 1033.7 kN, the deformation force simulated by software Forge is about 1000 kN, and the error is only 3.3%. The study on multi-directional forging technology of metal iron seat provides a favorable theoretical basis for the design of high-precision compound forging dies and a beneficial reference for multi-directional forging process.

Funds：

浙江省科技重大专项重点计划项目（2015C02055）

作者简介：丁金福（1965-），男，硕士，副教授，E-mail：zsddif@zjnu.cn；通信作者：姚汤伟（1969-），男，硕士，副教授，E-mail：ytw@zjnu.cn

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